/* editor text drawing. Copyright (C) 1996, 1997 the Free Software Foundation Authors: 1996, 1997 Paul Sheer This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #include "edit.h" #define MAX_LINE_LEN 1024 #ifndef MIDNIGHT #include "app_glob.c" #include "coollocal.h" #else #include "../src/mad.h" #endif static void status_string (WEdit * edit, char *s, int w, int fill, int font_width) { int i; char t[160]; /* 160 just to be sure */ /* The field lengths just prevents the status line from shortening to much */ sprintf (t, "[%c%c%c%c] %2ld:%3ld+%2ld=%3ld/%3ld - *%-4ld/%4ldb=%3d", edit->mark1 != edit->mark2 ? 'B' : '-', edit->modified ? 'M' : '-', edit->macro_i < 0 ? '-' : 'R', edit->overwrite == 0 ? '-' : 'O', edit->curs_col / font_width, edit->start_line + 1, edit->curs_row, edit->curs_line + 1, edit->total_lines + 1, edit->curs1, edit->last_byte, edit->curs1 < edit->last_byte ? edit_get_byte (edit, edit->curs1) : -1); sprintf (s, "%.*s", w + 1, t); i = strlen (s); s[i] = ' '; i = w; do { if (strchr (" +-*=/:b", s[i])) /* chop off the last word/number */ break; s[i] = fill; } while (i--); s[i] = fill; s[w] = 0; } #ifdef MIDNIGHT /* how to get as much onto the status line as is numerically possible :) */ void edit_status (WEdit * edit) { int w, i, t; char *s; w = edit->widget.cols - (edit->have_frame * 2); s = malloc (w + 15); if (w < 4) w = 4; memset (s, ' ', w); attrset (SELECTED_COLOR); if (w > 4) { widget_move (edit, edit->have_frame, edit->have_frame); i = w > 24 ? 18 : w - 6; i = i < 13 ? 13 : i; sprintf (s, "%s", name_trunc (edit->filename ? edit->filename : "", i)); i += strlen (s); s[strlen (s)] = ' '; t = w - 20; if (t < 0) t = 0; status_string (edit, s + 20, t, ' ', 1); } else { s[w] = 0; } printw ("%.*s", w, s); attrset (NORMAL_COLOR); free (s); } #else extern int fixed_font; void rerender_text (CWidget * wdt); void edit_status (WEdit * edit) { if ((edit->widget->options & EDITOR_NO_TEXT)) { return; } else { int w, i, t; CWidget *wdt; char id[33]; char s[160]; w = edit->num_widget_columns - 1; if (w > 150) w = 150; if (w < 0) w = 0; memset (s, 0, w); if (w > 1) { i = w > 24 ? 18 : w - 6; i = i < 13 ? 13 : i; sprintf (s, "%s", name_trunc (edit->filename ? edit->filename : "", i)); i = strlen (s); s[i] = ' '; s[i+1] = ' '; t = w - i - 2; if (t < 0) t = 0; status_string (edit, s + i + 2, t, 0, FONT_MEAN_WIDTH); } s[w] = 0; strcpy (id, edit->widget->ident); strcat (id, ".text"); wdt = CIdent (id); free (wdt->text); wdt->text = strdup (s); CSetWidgetSize (id, edit->widget->width, wdt->height); rerender_text (wdt); } } #endif /* boolean */ int cursor_in_screen (WEdit * edit, long row) { if (row < 0 || row >= edit->num_widget_lines) return 0; else return 1; } /* returns rows from the first displayed line to the cursor */ int cursor_from_display_top (WEdit * edit) { if (edit->curs1 < edit->start_display) return -edit_move_forward (edit, edit->curs1, 0, edit->start_display); else return edit_move_forward (edit, edit->start_display, 0, edit->curs1); } /* returns how far the cursor is out of the screen */ int cursor_out_of_screen (WEdit * edit) { int row = cursor_from_display_top (edit); if (row >= edit->num_widget_lines) return row - edit->num_widget_lines + 1; if (row < 0) return row; return 0; } #ifndef MIDNIGHT extern unsigned char per_char[256]; int edit_width_of_long_printable (int c); #endif /* this scrolls the text so that cursor is on the screen */ void edit_scroll_screen_over_cursor (WEdit * edit) { int p, l; int outby; p = edit_get_col (edit); edit_update_curs_row (edit); #ifdef MIDNIGHT outby = p + edit->start_col - edit->num_widget_columns + 1 + (EDIT_RIGHT_EXTREME + edit->found_len); #else outby = p + edit->start_col - edit->widget->width + 7 + (EDIT_RIGHT_EXTREME + edit->found_len) * FONT_MEAN_WIDTH + edit_width_of_long_printable (edit_get_byte (edit, edit->curs1)); #endif if (outby > 0) edit_scroll_right (edit, outby); #ifdef MIDNIGHT outby = EDIT_LEFT_EXTREME - p - edit->start_col; #else outby = EDIT_LEFT_EXTREME * FONT_MEAN_WIDTH - p - edit->start_col; #endif if (outby > 0) edit_scroll_left (edit, outby); p = edit->curs_row; l = 0; if (edit->found_len != 0) l = edit->num_widget_lines / 5; outby = p - edit->num_widget_lines + 1 + EDIT_BOTTOM_EXTREME + l; if (outby > 0) edit_scroll_downward (edit, outby); outby = EDIT_TOP_EXTREME - p + l; if (outby > 0) edit_scroll_upward (edit, outby); edit_update_curs_row (edit); } #ifndef MIDNIGHT #define CACHE_WIDTH 256 #define CACHE_HEIGHT 128 int EditExposeRedraw = 0; int EditClear = 0; /* background colors: marked is refers to mouse highlighting, highlighted refers to a found string. */ unsigned long edit_abnormal_color, edit_marked_abnormal_color; unsigned long edit_highlighted_color, edit_marked_color; unsigned long edit_normal_background_color; /* foreground colors */ unsigned long edit_normal_foreground_color, edit_bold_color; unsigned long edit_italic_color; /* cursor color */ unsigned long edit_cursor_color; void edit_set_foreground_colors (unsigned long normal, unsigned long bold, unsigned long italic) { edit_normal_foreground_color = normal; edit_bold_color = bold; edit_italic_color = italic; } void edit_set_background_colors (unsigned long normal, unsigned long abnormal, unsigned long marked, unsigned long marked_abnormal, unsigned long highlighted) { edit_abnormal_color = abnormal; edit_marked_abnormal_color = marked_abnormal; edit_marked_color = marked; edit_highlighted_color = highlighted; edit_normal_background_color = normal; } void edit_set_cursor_color (unsigned long c) { edit_cursor_color = c; } #else #define BOLD_COLOR MARKED_COLOR #define UNDERLINE_COLOR VIEW_UNDERLINED_COLOR #define MARK_COLOR SELECTED_COLOR #define DEF_COLOR NORMAL_COLOR static void set_color (int font) { attrset (font); } #define edit_move(x,y) widget_move(edit, y, x); static void print_to_widget (WEdit * edit, long row, int start_col, float start_col_real, long end_col, unsigned int line[]) { int x = (float) start_col_real + EDIT_TEXT_HORIZONTAL_OFFSET; int x1 = start_col + EDIT_TEXT_HORIZONTAL_OFFSET; int y = row + EDIT_TEXT_VERTICAL_OFFSET; set_color (DEF_COLOR); edit_move (x1, y); hline (' ', end_col + 1 - EDIT_TEXT_HORIZONTAL_OFFSET - x1); edit_move (x + FONT_OFFSET_X, y + FONT_OFFSET_Y); { unsigned int *p = line; int textchar = ' '; long style; while (*p) { style = *p >> 8; textchar = *p & 0xFF; #ifdef HAVE_SYNTAXH if (!(style & (0xFF - MOD_ABNORMAL - MOD_CURSOR))) SLsmg_set_color ((*p & 0x007F0000) >> 16); #endif if (style & MOD_ABNORMAL) textchar = '.'; if (style & MOD_HIGHLIGHTED) { set_color (BOLD_COLOR); } else if (style & MOD_MARKED) { set_color (MARK_COLOR); } if (style & MOD_UNDERLINED) { set_color (UNDERLINE_COLOR); } if (style & MOD_BOLD) { set_color (BOLD_COLOR); } addch (textchar); p++; } } } /* b pointer to begining of line */ static void edit_draw_this_line (WEdit * edit, long b, long row, long start_col, long end_col) { static unsigned int line[MAX_LINE_LEN]; unsigned int *p = line; long m1 = 0, m2 = 0, q; int col, start_col_real; unsigned int c; int fg, bg; int i; edit_get_syntax_color (edit, b - 1, &fg, &bg); q = edit_move_forward3 (edit, b, start_col - edit->start_col, 0); start_col_real = (col = (int) edit_move_forward3 (edit, b, 0, q)) + edit->start_col; if (col + 16 > -edit->start_col) { eval_marks (edit, &m1, &m2); if (row <= edit->total_lines - edit->start_line) { while (col <= end_col - edit->start_col) { *p = 0; if (q == edit->curs1) *p |= MOD_CURSOR * 256; if (q >= m1 && q < m2) *p |= MOD_MARKED * 256; if (q == edit->bracket) *p |= MOD_BOLD * 256; if (q >= edit->found_start && q < edit->found_start + edit->found_len) *p |= MOD_HIGHLIGHTED * 256; c = edit_get_byte (edit, q); edit_get_syntax_color (edit, q, &fg, &bg); /* we don't use bg for mc - fg contains both */ *p |= fg << 16; q++; switch (c) { case '\n': col = end_col - edit->start_col + 1; /* quit */ *(p++) |= ' '; break; case '\t': i = TAB_SIZE - ((int) col % TAB_SIZE); *p |= ' '; c = *(p++) & (0xFFFFFFFF - MOD_CURSOR * 256); col += i; while (--i) *(p++) = c; break; case '\r': break; default: if (is_printable (c)) { *(p++) |= c; } else { *(p++) = '.'; *p |= (256 * MOD_ABNORMAL); } col++; break; } } } } else { start_col_real = start_col = 0; } *p = 0; print_to_widget (edit, row, start_col, start_col_real, end_col, line); } #endif #ifdef MIDNIGHT #define key_pending(x) (!is_idle()) #else int edit_mouse_pending (Window win); #define edit_draw_this_line edit_draw_this_line_proportional static int key_pending (WEdit * edit) { if (!(edit->force & REDRAW_COMPLETELY) && !EditExposeRedraw) return CKeyPending (); return 0; } #endif /* b for pointer to begining of line */ static void edit_draw_this_char (WEdit * edit, long curs, long row) { int b = edit_bol (edit, curs); #ifdef MIDNIGHT edit_draw_this_line (edit, b, row, 0, edit->num_widget_columns - 1); #else edit_draw_this_line (edit, b, row, 0, edit->widget->width); #endif } /* cursor must be in screen for other than REDRAW_PAGE passed in force */ void render_edit_text (WEdit * edit, long start_row, long start_column, long end_row, long end_column) { long row = 0, curs_row; static int prev_curs_row = 0; static long prev_start_display = 0; static int prev_start_col = 0; static long prev_curs = 0; #ifndef MIDNIGHT static Window prev_win = 0; #endif int fg, bg; int force = edit->force; long b; /* if the position of the page has not moved then we can draw the cursor character only. This will prevent line flicker when using arrow keys. */ if ((!(force & REDRAW_CHAR_ONLY)) || (force & REDRAW_PAGE) #ifndef MIDNIGHT || prev_win != edit->widget->winid #endif ) { if (!(force & REDRAW_IN_BOUNDS)) { /* !REDRAW_IN_BOUNDS means to ignore bounds and redraw whole rows */ start_row = 0; end_row = edit->num_widget_lines - 1; start_column = 0; #ifdef MIDNIGHT end_column = edit->num_widget_columns - 1; #else end_column = edit->widget->width; #endif } if (force & REDRAW_PAGE) { row = start_row; b = edit_move_forward (edit, edit->start_display, start_row, 0); while (row <= end_row) { if (key_pending (edit)) goto exit_render; edit_draw_this_line (edit, b, row, start_column, end_column); b = edit_move_forward (edit, b, 1, 0); row++; } } else { curs_row = edit->curs_row; if (force & REDRAW_BEFORE_CURSOR) { if (start_row < curs_row) { long upto = curs_row - 1 <= end_row ? curs_row - 1 : end_row; row = start_row; b = edit->start_display; while (row <= upto) { if (key_pending (edit)) goto exit_render; edit_draw_this_line (edit, b, row, start_column, end_column); b = edit_move_forward (edit, b, 1, 0); } } } /* if (force & REDRAW_LINE) { ---> default */ b = edit_bol (edit, edit->curs1); if (curs_row >= start_row && curs_row <= end_row) { if (key_pending (edit)) goto exit_render; edit_draw_this_line (edit, b, curs_row, start_column, end_column); } if (force & REDRAW_AFTER_CURSOR) { if (end_row > curs_row) { row = curs_row + 1 < start_row ? start_row : curs_row + 1; b = edit_move_forward (edit, b, 1, 0); while (row <= end_row) { if (key_pending (edit)) goto exit_render; edit_draw_this_line (edit, b, row, start_column, end_column); b = edit_move_forward (edit, b, 1, 0); row++; } } } if (force & REDRAW_LINE_ABOVE && curs_row >= 1) { row = curs_row - 1; b = edit_move_backward (edit, edit_bol (edit, edit->curs1), 1); if (row >= start_row && row <= end_row) { if (key_pending (edit)) goto exit_render; edit_draw_this_line (edit, b, row, start_column, end_column); } } if (force & REDRAW_LINE_BELOW && row < edit->num_widget_lines - 1) { row = curs_row + 1; b = edit_bol (edit, edit->curs1); b = edit_move_forward (edit, b, 1, 0); if (row >= start_row && row <= end_row) { if (key_pending (edit)) goto exit_render; edit_draw_this_line (edit, b, row, start_column, end_column); } } } } else { if (prev_curs_row < edit->curs_row) { /* with the new text highlighting, we must draw from the top down */ edit_draw_this_char (edit, prev_curs, prev_curs_row); edit_draw_this_char (edit, edit->curs1, edit->curs_row); } else { edit_draw_this_char (edit, edit->curs1, edit->curs_row); edit_draw_this_char (edit, prev_curs, prev_curs_row); } } edit->force = 0; prev_curs_row = edit->curs_row; prev_curs = edit->curs1; prev_start_display = edit->start_display; prev_start_col = edit->start_col; #ifndef MIDNIGHT prev_win = edit->widget->winid; #endif exit_render: edit_get_syntax_color (edit, edit->start_display - 1, &fg, &bg); } #ifndef MIDNIGHT void edit_convert_expose_to_area (XExposeEvent * xexpose, int *row1, int *col1, int *row2, int *col2) { *col1 = xexpose->x - EDIT_TEXT_HORIZONTAL_OFFSET; *row1 = (xexpose->y - EDIT_TEXT_VERTICAL_OFFSET) / FONT_PIX_PER_LINE; *col2 = xexpose->x + xexpose->width + EDIT_TEXT_HORIZONTAL_OFFSET + 3; *row2 = (xexpose->y + xexpose->height - EDIT_TEXT_VERTICAL_OFFSET) / FONT_PIX_PER_LINE; } void edit_render_tidbits (CWidget * wdt) { int isfocussed; int w = wdt->width, h = wdt->height; Window win; win = wdt->winid; isfocussed = (win == CGetFocus ()); CSetColor (COLOR_FLAT); if (isfocussed) { render_bevel (win, 0, 0, w - 1, h - 1, 3, 1); /*most outer border bevel */ } else { render_bevel (win, 2, 2, w - 3, h - 3, 1, 1); /*border bevel */ render_bevel (win, 0, 0, w - 1, h - 1, 2, 0); /*most outer border bevel */ } } void edit_set_space_width (int s); extern int option_long_whitespace; #endif void edit_render (WEdit * edit, int page, int row_start, int col_start, int row_end, int col_end) { int f = 0; if (page) /* if it was an expose event, 'page' would be set */ edit->force |= REDRAW_PAGE | REDRAW_IN_BOUNDS; f = edit->force & (REDRAW_PAGE | REDRAW_COMPLETELY); #ifdef MIDNIGHT if (edit->force & REDRAW_COMPLETELY) redraw_labels (edit->widget.parent, (Widget *) edit); #else if (option_long_whitespace) edit_set_space_width (per_char[' '] * 2); else edit_set_space_width (per_char[' ']); edit_set_foreground_colors ( color_palette (option_editor_fg_normal), color_palette (option_editor_fg_bold), color_palette (option_editor_fg_italic) ); edit_set_background_colors ( color_palette (option_editor_bg_normal), color_palette (option_editor_bg_abnormal), color_palette (option_editor_bg_marked), color_palette (option_editor_bg_marked_abnormal), color_palette (option_editor_bg_highlighted) ); edit_set_cursor_color ( color_palette (option_editor_fg_cursor) ); if (!EditExposeRedraw) set_cursor_position (0, 0, 0, 0, 0, 0, 0, 0, 0); #endif render_edit_text (edit, row_start, col_start, row_end, col_end); if (edit->force) /* edit->force != 0 means a key was pending and the redraw was halted, so next time we must redraw everything in case stuff was left undrawn from a previous key press */ edit->force |= REDRAW_PAGE; #ifndef MIDNIGHT if (f) { edit_render_tidbits (edit->widget); CSetColor (edit_normal_background_color); CLine (edit->widget->winid, 3, 3, 3, edit->widget->height - 4); } #endif } #ifndef MIDNIGHT void edit_render_expose (WEdit * edit, XExposeEvent * xexpose) { int row_start, col_start, row_end, col_end; EditExposeRedraw = 1; edit->num_widget_lines = (edit->widget->height - 6) / FONT_PIX_PER_LINE; edit->num_widget_columns = (edit->widget->width - 7) / FONT_MEAN_WIDTH; if (edit->force & (REDRAW_PAGE | REDRAW_COMPLETELY)) { edit->force |= REDRAW_PAGE | REDRAW_COMPLETELY; edit_render_keypress (edit); } else { edit_convert_expose_to_area (xexpose, &row_start, &col_start, &row_end, &col_end); edit_render (edit, 1, row_start, col_start, row_end, col_end); } EditExposeRedraw = 0; } void edit_render_keypress (WEdit * edit) { edit_render (edit, 0, 0, 0, 0, 0); } #else void edit_render_keypress (WEdit * edit) { edit_render (edit, 0, 0, 0, 0, 0); } #endif